| We are the country's largest petroleum refiner and one of the largest producers of crude oil and natural gas. |
| I wonder if the member could tell me how that refiner margin works out over the entire cycle of a year. |
| Reduction in energy requirements through digester treatment or new designs for refiner plates. |
| The company is also the nation's largest refiner, with almost double the capacity of its closest competitor. |
| Each refiner must submit the kerosene that he produces to systematic laboratory tests. |
| The Engelhard group is a refiner of precious metals and a manufacturer of catalysts. |
